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3 years ago

X2 + 4x + 13= 0 how do you do this problem

Mathematics

1 answer:

LenKa [72]3 years ago

3 0

Answer:

well, first you'd do 13 x 4.

13x4= 52.

then do 52 times 2.

52x2= 104.

104 plus 13= there's the answer.

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At a movie theater, tickets for children cost $6.05 each and adult tickets cost $8.75 each. If ticket sales for a group of 35 pe

insens350 [35]

Answer:

More unknown than equations, the answer cannot be determined

Step-by-step explanation:

We can solve by means of a 2x2 system of equations, we have to:

"x" is the number of children's tickets

"y" is the number of adult tickets

Thus:

blank * x + 8.75 * y = 259

x + y = 35

which means that the number of children in the group cannot be calculated with the supplied data, this is because we have 3 unknowns and there are 2 equations, which means that the system has no solution.

If we assume a value, for example, $ 5

We can solve:

5 * x + 8.75 * y = 259

x + y = 35 => x = 35 - y

replacing we have:

5 * (35 - y) + 8.75 * y = 259

175 - 5 * y + 8.75 * y = 259

- 5 * y + 8.75 * y = 259 - 175

3.75 * y = 84

y = -84 / 3.75

y = 22.4

Thus:

x = 35 - (22.4) = 12.6

there being then 22 adults and 13 children.

6 0

4 years ago

Can someone help me with this problem (5 + x) + 0 = 5 + x

professor190 [17]

Answer:

0=0 or x=0 or x=x

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Is this the right answer??

blsea [12.9K]

Answer:

$135.01

Step-by-step explanation:

A mark up of 100% means that the price was doubled.

58.7*2=117.4

To add sales tax to a price (p) you need to do p+(sales tax * p)

117.4+.15(117.4)

135.01

8 0

3 years ago

Find the area of the circle. Round your answer to the nearest hundredth. It is a whole circle with a diameter of twelve, use the

olga55 [171]

Answer: 113

Step by Step explanation:

12/2=6

inches.π⋅6^2≈113

3 0

3 years ago

Please answer both for 15 points

Debora [2.8K]

Answer:

Hey look i am sorry for not doing them both i only know the second it is b 3000

Step-by-step explanation:

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3 years ago